diff --git a/src/assets/icons/DownArrow.tsx b/src/assets/icons/DownArrow.tsx
index 9603b08..c077a8b 100644
--- a/src/assets/icons/DownArrow.tsx
+++ b/src/assets/icons/DownArrow.tsx
@@ -1,6 +1,6 @@
 import React from 'react';
 
-const DownArrow = () => {
+const DownArrow = (props: React.SVGProps<SVGSVGElement>) => {
   return (
     <svg
       stroke='currentColor'
@@ -13,6 +13,7 @@ const DownArrow = () => {
       height='1em'
       width='1em'
       xmlns='http://www.w3.org/2000/svg'
+      {...props}
     >
       <line x1='12' y1='5' x2='12' y2='19'></line>
       <polyline points='19 12 12 19 5 12'></polyline>
diff --git a/src/assets/icons/MenuIcon.tsx b/src/assets/icons/MenuIcon.tsx
new file mode 100644
index 0000000..ab8ecdf
--- /dev/null
+++ b/src/assets/icons/MenuIcon.tsx
@@ -0,0 +1,25 @@
+import React from 'react';
+
+const MenuIcon = (props: React.SVGProps<SVGSVGElement>) => {
+  return (
+    <svg
+      stroke='currentColor'
+      fill='none'
+      strokeWidth='1.5'
+      viewBox='0 0 24 24'
+      strokeLinecap='round'
+      strokeLinejoin='round'
+      className='h-6 w-6'
+      height='1em'
+      width='1em'
+      xmlns='http://www.w3.org/2000/svg'
+      {...props}
+    >
+      <line x1='3' y1='12' x2='21' y2='12'></line>
+      <line x1='3' y1='6' x2='21' y2='6'></line>
+      <line x1='3' y1='18' x2='21' y2='18'></line>
+    </svg>
+  );
+};
+
+export default MenuIcon;
diff --git a/src/components/Chat/Chat.tsx b/src/components/Chat/Chat.tsx
index fde63af..7ec9c86 100644
--- a/src/components/Chat/Chat.tsx
+++ b/src/components/Chat/Chat.tsx
@@ -1,12 +1,19 @@
 import React from 'react';
+import useStore from '@store/store';
 
 import ChatContent from './ChatContent';
 import MobileBar from '../MobileBar';
 import StopGeneratingButton from '@components/StopGeneratingButton/StopGeneratingButton';
 
 const Chat = () => {
+  const hideSideMenu = useStore((state) => state.hideSideMenu);
+
   return (
-    <div className='flex h-full flex-1 flex-col md:pl-[260px]'>
+    <div
+      className={`flex h-full flex-1 flex-col ${
+        hideSideMenu ? 'md:pl-0' : 'md:pl-[260px]'
+      }`}
+    >
       <MobileBar />
       <main className='relative h-full w-full transition-width flex flex-col overflow-hidden items-stretch flex-1'>
         <ChatContent />
diff --git a/src/components/Chat/ChatContent/Message/Message.tsx b/src/components/Chat/ChatContent/Message/Message.tsx
index 9536d88..05a6bd1 100644
--- a/src/components/Chat/ChatContent/Message/Message.tsx
+++ b/src/components/Chat/ChatContent/Message/Message.tsx
@@ -1,4 +1,5 @@
 import React from 'react';
+import useStore from '@store/store';
 
 import Avatar from './Avatar';
 import MessageContent from './MessageContent';
@@ -25,13 +26,21 @@ const Message = React.memo(
     messageIndex: number;
     sticky?: boolean;
   }) => {
+    const hideSideMenu = useStore((state) => state.hideSideMenu);
+
     return (
       <div
         className={`w-full border-b border-black/10 dark:border-gray-900/50 text-gray-800 dark:text-gray-100 group ${
           backgroundStyle[messageIndex % 2]
         }`}
       >
-        <div className='text-base gap-4 md:gap-6 m-auto md:max-w-2xl lg:max-w-2xl xl:max-w-3xl p-4 md:py-6 flex lg:px-0'>
+        <div
+          className={`text-base gap-4 md:gap-6 m-auto p-4 md:py-6 flex lg:px-0 transition-all ease-in-out ${
+            hideSideMenu
+              ? 'md:max-w-5xl lg:max-w-5xl xl:max-w-6xl'
+              : 'md:max-w-3xl lg:max-w-3xl xl:max-w-4xl'
+          }`}
+        >
           <Avatar role={role} />
           <div className='w-[calc(100%-50px)] '>
             <RoleSelector
diff --git a/src/components/Menu/Menu.tsx b/src/components/Menu/Menu.tsx
index e2cc1ed..1de4ab7 100644
--- a/src/components/Menu/Menu.tsx
+++ b/src/components/Menu/Menu.tsx
@@ -1,18 +1,33 @@
-import React from 'react';
+import React, { useEffect } from 'react';
+import useStore from '@store/store';
 
 import NewChat from './NewChat';
 import ChatHistoryList from './ChatHistoryList';
 import MenuOptions from './MenuOptions';
+
 import CrossIcon2 from '@icon/CrossIcon2';
+import DownArrow from '@icon/DownArrow';
+import MenuIcon from '@icon/MenuIcon';
 
 const Menu = () => {
+  const hideSideMenu = useStore((state) => state.hideSideMenu);
+  const setHideSideMenu = useStore((state) => state.setHideSideMenu);
+
+  useEffect(() => {
+    window.addEventListener('resize', () => {
+      if (window.innerWidth < 768) setHideSideMenu(true);
+    });
+  }, []);
+
   return (
     <>
       <div
         id='menu'
-        className='dark bg-gray-900 md:fixed md:inset-y-0 md:flex md:w-[260px] md:flex-col max-md:translate-x-[-100%] max-md:fixed max-md:transition-transform max-md:z-[999] max-md:top-0 max-md:left-0 max-md:h-full max-md:w-3/4'
+        className={`group dark bg-gray-900 fixed md:inset-y-0 md:flex md:w-[260px] md:flex-col transition-transform z-[999] top-0 left-0 h-full max-md:w-3/4 ${
+          hideSideMenu ? 'translate-x-[-100%]' : 'translate-x-[0%]'
+        }`}
       >
-        <div className='flex h-full min-h-0 flex-col '>
+        <div className='flex h-full min-h-0 flex-col'>
           <div className='scrollbar-trigger flex h-full w-full flex-1 items-start border-white/20'>
             <nav className='flex h-full flex-1 flex-col space-y-1 p-2'>
               <NewChat />
@@ -23,27 +38,39 @@ const Menu = () => {
         </div>
         <div
           id='menu-close'
-          className='hidden md:hidden absolute z-[999] right-0 translate-x-full top-10 bg-gray-900 p-2 cursor-pointer hover:bg-black text-white'
+          className={`${
+            hideSideMenu ? 'hidden' : ''
+          } md:hidden absolute z-[999] right-0 translate-x-full top-10 bg-gray-900 p-2 cursor-pointer hover:bg-black text-white`}
           onClick={() => {
-            document
-              .getElementById('menu')
-              ?.classList.remove('max-md:translate-x-[0%]');
-            document.getElementById('menu-close')?.classList.add('hidden');
-            document.getElementById('menu-backdrop')?.classList.add('hidden');
+            setHideSideMenu(true);
           }}
         >
           <CrossIcon2 />
         </div>
+        <div
+          className={`${
+            hideSideMenu ? 'opacity-100' : 'opacity-0'
+          } group md:group-hover:opacity-100 max-md:hidden transition-opacity absolute z-[999] right-0 translate-x-full top-10 bg-gray-900 p-2 cursor-pointer hover:bg-black text-white ${
+            hideSideMenu ? '' : 'rotate-90'
+          }`}
+          onClick={() => {
+            setHideSideMenu(!hideSideMenu);
+          }}
+        >
+          {hideSideMenu ? (
+            <MenuIcon className='h-4 w-4' />
+          ) : (
+            <DownArrow className='h-4 w-4' />
+          )}
+        </div>
       </div>
       <div
         id='menu-backdrop'
-        className='hidden md:hidden fixed top-0 left-0 h-full w-full z-[60] bg-gray-900/70'
+        className={`${
+          hideSideMenu ? 'hidden' : ''
+        } md:hidden fixed top-0 left-0 h-full w-full z-[60] bg-gray-900/70`}
         onClick={() => {
-          document
-            .getElementById('menu')
-            ?.classList.remove('max-md:translate-x-[0%]');
-          document.getElementById('menu-close')?.classList.add('hidden');
-          document.getElementById('menu-backdrop')?.classList.add('hidden');
+          setHideSideMenu(true);
         }}
       />
     </>
diff --git a/src/components/MobileBar/MobileBar.tsx b/src/components/MobileBar/MobileBar.tsx
index e7efad0..e574584 100644
--- a/src/components/MobileBar/MobileBar.tsx
+++ b/src/components/MobileBar/MobileBar.tsx
@@ -2,10 +2,12 @@ import React from 'react';
 
 import useStore from '@store/store';
 import PlusIcon from '@icon/PlusIcon';
+import MenuIcon from '@icon/MenuIcon';
 import useAddChat from '@hooks/useAddChat';
 
 const MobileBar = () => {
   const generating = useStore((state) => state.generating);
+  const setHideSideMenu = useStore((state) => state.setHideSideMenu);
   const chatTitle = useStore((state) =>
     state.chats &&
     state.chats.length > 0 &&
@@ -23,30 +25,11 @@ const MobileBar = () => {
         type='button'
         className='-ml-0.5 -mt-0.5 inline-flex h-10 w-10 items-center justify-center rounded-md hover:text-gray-900 focus:outline-none focus:ring-2 focus:ring-inset focus:ring-white dark:hover:text-white'
         onClick={() => {
-          document
-            .getElementById('menu')
-            ?.classList.add('max-md:translate-x-[0%]');
-          document.getElementById('menu-close')?.classList.remove('hidden');
-          document.getElementById('menu-backdrop')?.classList.remove('hidden');
+          setHideSideMenu(false);
         }}
       >
         <span className='sr-only'>Open sidebar</span>
-        <svg
-          stroke='currentColor'
-          fill='none'
-          strokeWidth='1.5'
-          viewBox='0 0 24 24'
-          strokeLinecap='round'
-          strokeLinejoin='round'
-          className='h-6 w-6'
-          height='1em'
-          width='1em'
-          xmlns='http://www.w3.org/2000/svg'
-        >
-          <line x1='3' y1='12' x2='21' y2='12'></line>
-          <line x1='3' y1='6' x2='21' y2='6'></line>
-          <line x1='3' y1='18' x2='21' y2='18'></line>
-        </svg>
+        <MenuIcon />
       </button>
       <h1 className='flex-1 text-center text-base font-normal'>{chatTitle}</h1>
       <button
diff --git a/src/store/config-slice.ts b/src/store/config-slice.ts
index 557f8a6..3c44806 100644
--- a/src/store/config-slice.ts
+++ b/src/store/config-slice.ts
@@ -10,18 +10,21 @@ export interface ConfigSlice {
   hideMenuOptions: boolean;
   defaultChatConfig: ConfigInterface;
   defaultSystemMessage: string;
+  hideSideMenu: boolean;
   setOpenConfig: (openConfig: boolean) => void;
   setTheme: (theme: Theme) => void;
   setAutoTitle: (autoTitle: boolean) => void;
   setDefaultChatConfig: (defaultChatConfig: ConfigInterface) => void;
   setDefaultSystemMessage: (defaultSystemMessage: string) => void;
   setHideMenuOptions: (hideMenuOptions: boolean) => void;
+  setHideSideMenu: (hideSideMenu: boolean) => void;
 }
 
 export const createConfigSlice: StoreSlice<ConfigSlice> = (set, get) => ({
   openConfig: false,
   theme: 'dark',
   hideMenuOptions: false,
+  hideSideMenu: false,
   autoTitle: false,
   defaultChatConfig: _defaultChatConfig,
   defaultSystemMessage: _defaultSystemMessage,
@@ -61,4 +64,10 @@ export const createConfigSlice: StoreSlice<ConfigSlice> = (set, get) => ({
       hideMenuOptions: hideMenuOptions,
     }));
   },
+  setHideSideMenu: (hideSideMenu: boolean) => {
+    set((prev: ConfigSlice) => ({
+      ...prev,
+      hideSideMenu: hideSideMenu,
+    }));
+  },
 });
diff --git a/src/store/store.ts b/src/store/store.ts
index dcce788..f5dfdf8 100644
--- a/src/store/store.ts
+++ b/src/store/store.ts
@@ -57,6 +57,7 @@ const useStore = create<StoreState>()(
         defaultSystemMessage: state.defaultSystemMessage,
         hideMenuOptions: state.hideMenuOptions,
         firstVisit: state.firstVisit,
+        hideSideMenu: state.hideSideMenu,
       }),
       version: 6,
       migrate: (persistedState, version) => {